As it rebuilds its network so it can fully restore PlayStation Network services, the company says it is moving its data center to a new location that is more secure. Sony says it will release more information about these upgrades shortly.

And the company is working with law enforcement and a private security firm to track down and punish the people responsible. "We are currently conducting a thorough investigation of the situation and are working closely with a recognized technology security firm and law enforcement in order to find those responsible for this criminal act no matter where in the world they might be located," according to the blog, written by Patrick Seybold, the senior director of corporate communications and social media for the company.

"This malicious attack against our system and against our customers is a criminal act and we are proceeding aggressively to find those responsible."

Sony doesn't post a definite date for when PlayStation Network will be back up fully, promising only that parts of it will go live within a week. "However, we want to be very clear that we will only restore operations when we are confident that the network is secure," Seybold writes.